According to [1]}, the PDF of \(Y_n\)  in Nakagami-\(m\) 
fading is given by
\( f_{Y_n } \left( y \right) = \frac{{{m_n} ^{m_n}y^{m_n - 1} }}{{{a_n} ^{m_n} \Gamma \left( m_n \right)}}\exp \left({ - \frac{{m_n y}}{{a_n }}} \right),\) 
